She'll play Oscar winner Geraldine Page in the drama about the legendary rift between Joan Crawford and Bette Davis.
Sarah Paulson is re-re-teaming with Ryan Murphy.
The People v. O.J. Simpson: American Crime Story and American Horror Story star has joined the prolific producer's third FX anthology, Feud.
Chronicling the legendary rift between Joan Crawford and Bette Davis that occurred during the making of 1962 feature film What Ever Happened to Baby Jane? The rivalry between the two stars was paramount to the movie's popularity at the time.
Murphy announced Tuesday on Twitter that Paulson will play Geraldine Page.
Page is an eight-time Oscar nominee who won for 1985's The Trip to Bountiful. The actress scored nominations for roles in Hondo, Summer and Smoke, Sweet Bird of Youth, You're a Big Boy Now, Pete 'n' Tillie, Interiors and The Pope of Greenwich Village. She became the TV Academy's first female president — only to resign in disgust.
American Horror Story grad Jessica Lange will reteam with Murphy and star as Crawford, while Susan Sarandon will play Davis. The pilot is based in part on the script Best Actress by Jaffe Cohen and Michael Zam, which Murphy purchased. Murphy will executive produce alongside Plan B Entertainment's Brad Pitt and Dede Gardner. Alfred Molina co-stars as the film's director, Robert Aldrich; Stanley Tucci is set as studio titan Jack Warner; Judy Davis will play gossip columnist Hedda Hopper; and Dominic Burgess is set as Crawford and Davis' co-star, Victor Buono. Catherine Zeta-Jones will play Olivia de Havilland.
Murphy will direct several episodes. Production begins this fall for a 2017 debut on FX. Lange and Sarandon also will be credited as producers.
For Paulson, the role comes as she is up for an Emmy for her role as Marcia Clark in People v. O.J.